Peter m



P. M. WILSON.

BLEVATOR HATGH.

'Patented Feb. 24, v1885.

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PETER M. VILSON, OE NEW YORK, N. Y.

ELEVATOR-HATCH.

SPECIFICATION forming part of Letters Patent No. 312,782, dated February24, 1885.

Application filed June 20, 1884. Renewed January 28, 1585. (Xo model.)

T all whomv it may concern:

Beit known that I, PETER M. WILSON, of the city and county of New York,in the State of New York, have invented certain new and usefulImprovements Relating to Elevator- Hatches, of which the following is aspecification.

The invention may apply to all elevatorhatches which are liftedsuccessively by the rising of the elevator and carried on the elevatoruntil the latter descends again to the same floor from which it receivedthe hatch. Such have been before known. I have invented importantimprovement-s in the details.

I make the several hatchways of a building differing a little in size,the largest at the top, contracting the dimensions successively at eachioor until thelowermost is only sufficient to allow the passage of theelevator. The recesses in which they are received are correspondinglyvaried in size. Each hatch is made with a beveled edge, and is receivedin a corresponding beveled rabbet in the floor in which it matches. Acentral casing of metal having a smooth exterior, conical or flaringfrom the top downward, incloses the complex work at the point where therope attaches. As the elevator-car rises this casing enters acorresponding hole in the hatch and insures that the hatch is receivedand held in the correct position.

In the lower face-of each hatch are two or more recesses-I willrepresent them as two- :re-enforced by a meta-l plate, so as to form adenite and reliable guide, which receives a tapering spur carried on theupper face of the hatch below.

It will be understood that my hatchways may be defended by partitions orrailings iu the ordinary way, to prevent people from walking over them;but the construction allows their use without such railing or lateraldefense. They may be walked over with impunity. In case of fire or otheremergency the hatches may serve as a part of the floor. I will show themas of only moderate thickness, but they may be varied in that rospect. Iprefer two thicknesses of boards,

nailed or otherwise strongly secured together, the grain of onethickness running crosswise to that of the other.

The following is a description of what I consider the best means ofcarrying out the in vention.

The accompanying drawings form a part of this specification.

Figure lis a vertical section on a small scale, showing the severalfloors of a tall building. The remaining figures are on a larger scale.Fig. 2 is a diagram showing in verticalsection the several doors broughtnear together the better to show the relative sizes and relations of thehatches and hatchways. Fig. 3 is a plan view corresponding to Fig. 2.Fig. 4 is an enlarged detail section.

Similar letters of reference indicate corresponding parts in all thefigures.

A A2, Ste., are the several lioors of a tall warehouse. Bis the car ofan elevator raised or lowered by any ordinary or suitable mechanism,actuating a connecting-rope or set of ropes, O. There may be anyordinary or suitable guiding means equipped with racks or otherdevices,with means (not represented) on the car for engaging therewithin case of failure of the hoisting rope or ropes. A series of hatches, MM, &c., apply in the rabbets in the several doors. The lowermost is butlittle larger than the car, and flared at the edges, as shown. The nextis larger, and so on upward, each being larger' than the hole below. Thehatchways are correspondingly formed. Each of the rabbets around theseveral hatches is formed with a flat bottom, a., which supports theweight of the hatch. The flaring side a is matched by a correspondingbeveled edge on the hatch. IVhen the hatch is lowered linto position,the flaring side a', acting against the correspondingly-beveled side ofthe hatch,

guides it correctly into position.

D is a casing of cast-iron or other suitable material inclosing theattachment of the rope or ropes C to the car and smoothly finished onits outer surfaces. Its upper portion is tapered. The holes in t-heseveral hatches are correspondingly formed. Vheu the elevator in risingapproaches a hatch, the small upper end of the casing D easily entersthe hole in the hatch, and as the larger portion ofthe easing I) is'presented, the form insures that it shall be received in the correctposition. There may be additional pins (not represented) extendingupward from the top of the car B, which may be received in holes in thehatches,

IOO

if such shall be found necessary or desirable. In all cases I providerecesses on the under face of each hatch peculiarly arranged to receiveshort tapering spurs carried on the hatch below. The spurs are marked M"and may Vbe formed of' cast-iron with sufcient flanges,

m', to allow their being strongly secured by screws m. The recesses inthe under side of each hatch are mark/ed N Each is encircled anddefended by a plate, n', having a sufficient hole in the middle toreceive the spur. The plate is secured by screws n. These spurs M* andtheir corresponding holes N* are arranged as follows: The uppermosthatch, M, is provided with two holes, N i2 near two opposite corners.There are two spurs, MVS, in eX- actly corresponding positions on theupper face of the next hatch below. On the under face of this secondhatch are two recesses, N*, located in a line transverse to the line ofthe first. In other words, the corners which do not carry spurs M areprovided with the holes Nik. lThe neXt hatch below the hatch last namedcarries the spur Md near the corners, which match to the recesses above.This third hatch is provided also with recesses Ni, but

A they are arranged in the plane of the holes in the uppermost hatch.They are on the corners of the third hatch, which are not occupied bythe spurs Mii Thus eachhatch, except the uppermost, is provided bothwith a pair of recesses N :t and with a pair of spurs M*, and in eachcase the spurs are near the corners which are not provided with therecesses N21i. The car B at its top carries a platform, B, of lightwrought-iron. The upper Ifin-e of this platform B carries spurs b, whichengage in the recesses Nt: in thelowesthatch. Modifications may be madein the forms and proportions of the details without departing from theprinciple or sacrificing the advantages ofthe invention.

The Obliquity or flare of the sides a of the several rabbets in thefiooring may be varied. I can vary the depths of the several rabbets,and consequently the extent to n hich the hatch shall sink guided by theflaring surfaces a. It is important that the flare be smooth, so thatthe function ofguiding shall be performed without evertilting the hatchby positively supporting one side at ahigher elevation than the other.

The casing D may be varied in size and in degree of taper. It isimportant that it. be kept as small as practicable in orderto reduce thearea of the opening which is left uncovered when the elevator sinksbelow any given hatch.

I claim as my inventionl. The series of hatches h M2, differing in size,in combination with corresponding seats having Haring rabbots a c at theseveral doors, and with an elevator-car, B, and means for operating it,all arranged forjoint operation, as herein specified. A

2. The hatches lil M2, differing in size, in combination with the floorsA A2, having rabbetswith flaring edges a', and with an elevater-car, B,operating-rope C, and hollow tapering casing D, arranged for jointoperation, as herein specied.V

3. The hatches M M2, differing in size and provided with recesses N andtapering spurs Mii, arranged out of line, in combination with thedioorsA A2, having rabbets a', with an elevator-car, B, carrying a platform,B', having spurs b, and suitable means for operating the car,substantially as herein specified.

In testimony whereof I have hereunto hset my hand-` at New York city,New York, this 6th day of June, 1884, inthe presence of two subscribingwitnesses.

I. M. VILSON.

